<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>评论列表</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css">
  <style>
    .badge {
      float: right;
      margin-right: 5px;
    }

    .my-page {
      margin: 0 5px;
    }

    .all-page-content {
      margin-left: 5px;
    }

    .mt15 {
      margin-top: 15px;
    }
  </style>
</head>

<body style="padding: 15px;">

  <!-- 评论面板 -->
  <div class="panel panel-primary">
    <div class="panel-heading">
      <h3 class="panel-title">发表评论</h3>
    </div>
    <form class="panel-body cmt-form">
      <div>评论人：</div>
      <input type="text" class="form-control" name="username" autocomplete="off" />
      <div>评论内容：</div>
      <textarea class="form-control" name="content"></textarea>
      <button type="submit" class="btn btn-primary submit">发表评论</button>
    </form>
  </div>


  <!-- 评论列表 -->
  <ul class="mt15 list-group">
    <!-- <li class="list-group-item">
       <span>评论内容</span>
       <span class="badge del" style="cursor:pointer; background-color: lightgray;">删除</span> 
       <span class="badge" style="background-color: #F0AD4E;">评论时间：xxx</span>
       <span class="badge" style="background-color: #5BC0DE;">评论人：xxx</span>
    </li> -->
  </ul>

  <!-- 分页器 -->
  <nav class="mt15">
    <ul class="pagination">
      <li>
        <button class="last">
          <span>&laquo;</span>
        </button>
      </li>
      <li class="my-page">
        <span class="page-show"></span>
      </li>
      <li>
        <button class="next">
          <span>&raquo;</span>
        </button>
      </li>
      <li class="all-page-content">
        <span>共计:<span class="all-page"></span>页</span>
      </li>
    </ul>
  </nav>
  <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
  <script src="./lib/form-serialize.js"></script>
  <script>
   //Dom对象绑定
   const list =document.querySelector('.list-group')
   const btn = document.querySelector('.submit')
   const del = document.querySelector('.del')
   const username = document.querySelector('input')
   const content =document.querySelector('textarea')
   const last =document.querySelector('.last')
   const next =document.querySelector('.next')
   const currentPage =document.querySelector('.my-page')
   const totalPage =document.querySelector('.all-page')
   //设置初始页数为1
   let page=1
  //初始化调用列表请求函数
   getlist(page)
  //列表数据请求
   async function getlist(page){
     let resData = await axios.get(`https://hmajax.itheima.net/api/cmtlist?page=${page}`)
     console.log(resData)
     renderList(resData.data)
    }
  //列表数据渲染
  function  renderList(data){
     totalPage.innerText=data.allPage
     currentPage.innerText=page
     list.innerHTML=data.data.map(item=>{
      return  `<li class="list-group-item">
       <span>${item.content}</span>
       <span class="badge del" style="cursor:pointer;  background-color: lightgray;" data-id=${item.id}>删除</span> 
       <span class="badge" style="background-color: #F0AD4E;">评论时间：${item.time}</span>
       <span class="badge" style="background-color: #5BC0DE;">评论人：${item.username}</span>
    </li> `
     }).join('')  
  }
  //提交评论请求
   function sendComment(data){
      axios.post('https://hmajax.itheima.net/api/addcmt',data)
  }
  //提交删除数据请求
  function delComment(id){
      axios.get(`https://hmajax.itheima.net/api/delcmt?id=${id}`)
  }
  //点击提交事件监听
  btn.addEventListener('click',function(e){
    e.preventDefault()
    let form = document.querySelector('.cmt-form')
    const data = serialize(form, { hash: true, empty: true})
    if(Object.values(data).some(item=>item == '')){
      alert('请输入信息不完整，请填写完整')
      return
    }
    sendComment(data)
    getlist(1)
    username.value=''
    content.value=''
  })

  //点击删除事件监听
  list.addEventListener('click',function(e){
  let id = e.target.dataset.id
     delComment(id)
    getlist(1)
   
 })
  //点击上一页事件
  last.addEventListener('click',function(){
   page>1?page--:1
   getlist(page)
  
})
  //点击下一页事件
  next.addEventListener('click',function(){
  getlist(page++)
})

  </script>
</body>

</html>